Radial artery cannulation and ishaemic damage: a review

A review of the literature concerning ischaemic complications following radial artery cannulation suggests that the Allen test has little predictive validity. Other methods of assessing the ulnar collateral circulation are discussed.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72040/1/j.1365-2044.1985.tb11055.x.pd